A banker who was working with part of scandal-hit 1MDB, the Malaysian state fund, is no longer at his firm.

The saga surrounding alleged corruption at the state-run 1MDB fund of Malaysia continued amid a report that a senior executive at BSI, the private bank, left the Switzerland-headquartered firm last month.

Yak Yew Chee had been a relationship manager for 1MDB Global Investments, part of 1Malaysia Development Berhad. The organisation has been the subject of investigations. Among the claims is that Prime Minister Najib Razak has benefited from the fund. He strenuously denies such allegations.

Authorities in Singapore and Switzerland have investigated accounts connected to 1MDB (to see a recent story, click here.)

According to Bloomberg, Yak's accounts were frozen by Singapore authorities in September and he has been questioned as part of the city-state's 1MDB inquiry. Yak, a senior vice president at BSI, was until recently paid a monthly salary of about S$82,000 ($59,000), according to court papers.

The news service quoted a BSI spokesperson as saying the banker was no longer employed by BSI. This publication has called and emailed BSI for details and confirmation, but had not received a response at the time of going to press.

Yak's lawyer, Roderick Martin, declined to comment, Bloomberg reported. Yak was placed on leave from May to September in 2015 while BSI conducted investigations, according to court papers.

BSI has been through a tumultuous recent period. Last year, it was bought by Brazil-headquartered BTG Pactual, only for it to be sold a few weeks ago by BTG Pactual to Switzerland’s EFG International. The Brazilian lender has been engulfed in a corruption scandal and sold BSI as part of moves to raise capital.